Boston to Seattle time converter

Seattle is 3 hours behind Boston. When it is 9:00 AM in Boston, it is 6:00 AM in Seattle.

Boston EDT

Saturday, October 17, 2026

Seattle PDT

Saturday, October 17, 2026

Boston
Massachusetts, United States
Sat, Oct 17
EDTUTC-4
Seattle
Washington, United States
Sat, Oct 17
PDTUTC-7-3h
Finding your time zone…
Shared working hours (9:00–18:00)

Boston to Seattle conversion table

Every hour of today in Boston and the matching time in Seattle. Light rows are typical working hours (9:00–18:00).

BostonSeattle
12:00 AM9:00 PM−1 day
1:00 AM10:00 PM−1 day
2:00 AM11:00 PM−1 day
3:00 AM12:00 AM
4:00 AM1:00 AM
5:00 AM2:00 AM
6:00 AM3:00 AM
7:00 AM4:00 AM
8:00 AM5:00 AM
9:00 AM6:00 AM
10:00 AM7:00 AM
11:00 AM8:00 AM
12:00 PM9:00 AM
1:00 PM10:00 AM
2:00 PM11:00 AM
3:00 PM12:00 PM
4:00 PM1:00 PM
5:00 PM2:00 PM
6:00 PM3:00 PM
7:00 PM4:00 PM
8:00 PM5:00 PM
9:00 PM6:00 PM
10:00 PM7:00 PM
11:00 PM8:00 PM

Best time to call or meet

Both sides are at work from 12:00 PM – 6:00 PM in Boston (9:00 AM – 3:00 PM in Seattle).

Daylight saving time and the difference

The difference changes during the year because Boston and Seattle switch clocks on different dates:

  • Oct 17, 2026 – Nov 1, 2026: -3h
  • Nov 1, 2026 – Nov 1, 2026: -2h
  • Nov 1, 2026 – Mar 14, 2027: -3h
  • Mar 14, 2027 – Mar 14, 2027: -4h
  • Mar 14, 2027 – Oct 17, 2027: -3h

Distance

Boston and Seattle are 4,000 km (2,485 miles) apart in a straight line.

More conversions

Seattle to BostonBoston to New YorkBoston to LondonBoston to Los AngelesBoston to ChicagoBoston to TorontoBoston to São PauloBoston to ParisBoston to BerlinBoston to MoscowBoston to DubaiBoston to New DelhiBoston to Bangkok
New York to SeattleLondon to SeattleLos Angeles to SeattleChicago to SeattleToronto to SeattleSão Paulo to SeattleParis to SeattleBerlin to SeattleMoscow to SeattleDubai to SeattleNew Delhi to SeattleBangkok to Seattle

Questions and answers

What is the time difference between Boston and Seattle?

Seattle is 3 hours behind Boston.

What time is it in Seattle when it is 9 AM in Boston?

When it is 9:00 AM in Boston, it is 6:00 AM in Seattle.

When is the best time to call Seattle from Boston?

Both sides are at work from 12:00 PM – 6:00 PM in Boston (9:00 AM – 3:00 PM in Seattle).

Does the time difference between Boston and Seattle change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.